What is the Maximum Zs earth fault loop impedance value for the TM30D trip unit?

For the NSX TM30D breakers at U=218.5V (This is including the Cmin Factor .95 as per BS7671 amendment 3:2015)

- Zs (5s) = 0.722 ohms
- Zs (0.4s) = 0.55 ohms

Released for:Schneider Electric UK